import java.util.*;

/**
 * Created with IntelliJ IDEA.
 * Description:
 * User: 86185
 * Date: 2023-05-14
 * Time: 11:01
 */
public class Test3 {
    //hashcode一样，equals不一定一样
    //equals一样，hashcode一定一样
    public static void main(String[] args) {
        Map<String, Integer> map = new HashMap<>();
        Map<String, Integer> map1 = new TreeMap<>();

        Set<String> strings = new HashSet<>();
        Set<String> strings1 = new TreeSet<>();
    }
}
